Portable toilet



FIG. 1 is a perspective view of a portable toilet in full lines with an advertisement shown in broken lines representing environmental association matter being for illustrative purposes only and forming no part of the claimed invention.

FIG. 2 is a front elevational view thereof.

FIG. 3 is a rear elevational view thereof.

FIG. 4 is a right side elevational view thereof.

FIG. 5 is a left side elevational view thereof.

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof. 

The ornamental design for a portable toilet, as shown and described. 